One British dad has upped the ante in the world of birthday cakes with a playable Angry Birds treat. Knowing his soon-to-be 6-year-old son's love of the popular video game, the father constructed a table-length cake complete with working catapult and iced birds as ammunition. Place the birds in the slingshot and watch as they knock over the pillars and planks placed along the cake. See if you can top that at your next birthday party!